Hourly Weather Forecast - Williamstown, MA

12 AM
29°F
30%
8mph
NNW
30 % Chance of Heavy Snow
Humidity
80%
Feels like
22°F
Dew Point
24°F
1 AM
29°F
30%
8mph
N
30% Chance of Snow
Humidity
83%
Feels like
21°F
Dew Point
24°F
2 AM
28°F
30%
7mph
N
30% Chance of Snow
Humidity
83%
Feels like
20°F
Dew Point
24°F
3 AM
27°F
30%
7mph
N
30% Chance of Flurries
Humidity
83%
Feels like
19°F
Dew Point
23°F
4 AM
26°F
30%
6mph
N
30% Chance Snow Showers
Humidity
86%
Feels like
19°F
Dew Point
23°F
5 AM
26°F
30%
6mph
N
30% Chance Snow Showers
Humidity
88%
Feels like
19°F
Dew Point
23°F

Rain And Snow Totals Through Monday

Atmospheric River Impacts Northern California

The plume of abundant moisture impacting the Northwest the last several days will focus more on Northern California through Monday bringing heavy rainfall and mountain snow.

NOAA, NCDC

White Christmas? What Are The Odds

Today's Weather Outlook

Today's Weather Outlook

Cold weather

During Extreme Cold: Watch for Frostbite!

Flu Update Valid For Week Ending December 13, 2025

Weekly Flu Update: Flu Spreading Hard Across U.S.

Watch vs. Warning

Flash Flood Watch and Warning Defined

loading ad...

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide